Decorative building block III



FIG. 1 is a front view of the decorative building block III;

FIG. 2 is a right hand end view, left hand end view being a mirror image thereof of the decorative building block III;

FIG. 3 is a rear view of the decorative building block III;

FIG. 4 is a top view of the decorative building block III; and,

FIG. 5 is a bottom view of the decorative building block III. 

The ornamental design for the decorative building block III, as shown. 